Hey there! Are you curious about what format does 3D viewer support? Let's dive in and find out! 3D viewers support various file formats for viewing 3D models. The most common and widely supported formats include STL (stereolithography), OBJ (wavefront object), PLY (polygon file format), and glTF (GL Transmission Format). These formats are commonly used in the 3D modeling and printing industry. Additionally, 3D viewers may also support other formats such as FBX, 3DS, DAE, and more. It's important to check the specific 3D viewer's supported formats to ensure compatibility with your 3D model files. So, next time you're looking to view or share your awesome 3D creations, remember to check if the 3D viewer supports the file format you're working with. Happy 3D modeling and viewing!